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Weather
chapter 1-1 and 1-3
23
Science
6th Grade
12/21/2010

Additional Science Flashcards

 


 

Cards

Term
Westerlies
Definition
Winds that blow between 30 and 60 (N and S) latitude. 
Term
Mesophere
Definition
The coldest layer of the atmosphere between 50 and 80 KM (3rd up from the Earth's surface 
Term
Coriolis Effect
Definition

The curved path of the wind due to Earth's rotation. 

  • In the North Wind- trraveling North curves east -wind traveling south curves west
  • In the South winds- traveling north curve west Winds- traveling south curve east
Term
Polar Easterlies
Definition
Winds that are lcoated between the poles and 60 degrees north and south of the equator.
Term
Thermosphere
Definition
The top layer of the atmosphere.  It has high energy (termperatures) and low heat because there are not many molecules that collide.
Term
Stratosphere
Definition

The layer of the atmosphere located between 16km and 50km from the Earth's surface.

  • This layer contains the Ozone layer which protects us from the sun.
  • Gases do not mix. there is little moisture, extremely cold, temperatures rise with altitude. 
Term
Troposphere
Definition
The layer of the atmosphere closest to Earth's surface.  This is the layer that is most dense, 90% of all gases, temperature differences cause constant motion of air. 
Term
Trade Winds
Definition
Winds that occur between the equator and 30 degrees North and South of the Equator
Term
High Pressure
Definition
As altitude increases air pressure decreases due to less molecules pushing down. 
Term
Low Pressure
Definition
Pressure degreese with higher altitude and lower temperatures
Term
How does altitude affect air pressure?
Definition
Air pressure decreases as altitude increases due to less dense molecules in the atmosphere. 
Term
Jet streams
Definition
narrow belts of high speed winds that blow in the upper troposphere and lowere stratosphere.  They do not have a regular pattern.
Term
How does pressure and termperature effect winds?
Definition
Wind travels from areas of high pressure to areas of low pressure.  Wind blows from areas to areas of low temperature (high pressure) to areas of high temperature (low pressure). 
Term
Sea Breezes
Definition

during the day the land heats up faster than the water so wind blows from water (cool, high pressure) to land (warm, low pressure)

 

Term
Land Breezes
Definition
At night, the water is warmer than the land and the wind blows from the land to the water. 
Term
Lines of Latitude
Definition
Lines North and South of the equator that are at 30, 60, 90 degrees
Term
Global Winds
Definition
changes every 30 degrees on Earth due to areas of high and low pressure
Term
Doldrums
Definition
area near the Equator with low wind
Term
Horse Latitudes
Definition
Area near 30 degrees North and South of the Equator where there is low winds
Term
Auroras
Definition
occur in the ionosphere
Term
Where does weather happen in our atmosphere?
Definition
Troposphere
Term
Ozone Layer
Definition
in the stratosphere it protects us from sun and UV light, warms the Earth
Term
Ionosphere
Definition
Layer of the atmosphere where auroas occur.  Located in the upper part of the mesosphere and the lower part of the thermosphere.  Allow AM radio waves to be reflected back to Earth's surface. 
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